METHOD OF PRODUCING UNBLEACHED PULP WITH VERY LOW CHEMICAL OXYGEN DEMAND

摘要

FIELD: paper-and-pulp industry. ^ SUBSTANCE: invention relates to production of pulps used in binder-based articles. Method of invention comprises repetitive soaking and washing of unbleached pulp in water, which is maintained in alkaline state at elevated temperature to obtain cellulose product characterized by chemical oxygen demand not above 2.0 kg per 10 kg dry cellulose. ^ EFFECT: improved strength characteristics of products. ^ 14 cl, 1 dwg, 2 ex